PDF malware analysis — malicious · fcbc5bfaa5fc59e6

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 06:48:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: ef6eb893390698d9909f35ca8f57fa58 SHA-1: e66c229391238268fbcf5f80a661ad43ce23fced SHA-256: fcbc5bfaa5fc59e6a7df0d939dcd96c61e72b9990153384300e0d90d7ce0a9ea

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Coin Master Hack 2021 Download' and includes a high-confidence heuristic firing for a game hack redirect. The embedded URL, http://netcdn.tw/app/406889139/coin-master-hack-2021-download-game-hack, likely leads to a malicious payload or further phishing content. The document's structure and content suggest it is part of a phishing campaign aiming to trick users into downloading potentially harmful software or visiting malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://netcdn.tw/app/406889139/coin-master-hack-2021-download-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/roblox-hack-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-character-clothing-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacking-system-for-clothes-on-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/bear-cheats-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-make-a-roblox-script-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-stuff-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-do-you-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-on-roblox-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-unlimited-robux-in-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-no-scam-or-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-hacks-admin-commands_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003140.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3140	22548 bytes
SHA-256: `573958490a9ab7ad76200c435d0edf043d4fdda4edca6449b5dd872382327ff6`
`font_01_sfnt_off00006388.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6388	18988 bytes
SHA-256: `af951b1633a2787412a9a702c9754db5e3271a3175a3f5193121ef3c3d99dea6`

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